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Pi is an irrational number.

## Proof that π is irrational

en.wikipedia.org/wiki/Proof_that_π_is_irrational

In the 18th century, Johann Heinrich Lambert proved that the number π (pi) is irrational. ... that if x is non-zero and rational then this expression must be irrational.

## Irrational Numbers - Math is Fun

www.mathsisfun.com/irrational-numbers.html

A Rational Number can be written as a Ratio of two integers (ie a simple fraction). Example: 1.5 is rational, ... Example: π (Pi) is a famous irrational number.

## If 22/7 is rational, why is pi irrational? - Quora

www.quora.com/If-22-7-is-rational-why-is-pi-irrational

Because [math] \dfrac{22}{7} [/math] isn't pi. The definition of an irrational number is that it cannot be expressed as a ratio of two integers [math] \dfrac...

## fractions - why is PI considered irrational if it can be expressed as ...

math.stackexchange.com/questions/1179600/why-is-pi-considered-irrational-if-it-can-be-expressed-as-ratio-of-circumference

Mar 7, 2015 ... why is PI considered irrational if it can be expressed as ratio of circumference to .... A real number is rational, if it is the ratio of two integers.

## Recognizing rational and irrational numbers (examples) | Rational ...

Actually negative numbers can be rational OR irrational. For example: pi is a famous irrational number, it would follow negative pi is also an irrational number.

## how is pi an irrational number when it can be expressed as 22/7 ...

hubpages.com/education/forum/33827/how-is-pi-an-irrational-number-when-it-can-be-expressed-as-227

Pi is an irrational number simply because it does not have an exact decimal equivalent. ... 22/7 is a rational number but pi is not because 22/7 is only a rough or ...

## Proving Pi is Irrational: a step-by-step guide to a “simple proof ...

mindyourdecisions.com/blog/2013/11/08/proving-pi-is-irrational-a-step-by-step-guide-to-a-simple-proof/

Nov 8, 2013 ... You might remember the terms rational and irrational numbers from math class. As a refresher, numbers like 3, 0.5, 0.333…., -10, -1/2, or 1/7 ...

## Is pi rational or irrational ??? | Yahoo Answers

Jan 30, 2009 ... 22/7 and pi have nothing to do with eachother. 22/7 is rational and pi is irrational. An irrational number can be written as a decimal, but not as a ...

## Rational and irrational numbers explained with examples and non ...

www.mathwarehouse.com/arithmetic/numbers/rational-and-irrational-numbers-with-examples.php

is probably the most famous irrational number out there! pi. Although this number can be expressed as a fraction, we need more than to be a rational number.

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Q: Is pi a rational or irrational number?